The new Simplicam do-it-yourself security camera claims it can only send alerts when it sees a human face. Personal Tech columnist Geoffrey Fowler puts it to the test with a cat.

This transcript has been automatically generated and may not be 100% accurate.

... this is simply can't ... know what I connected home security camera ... what the drop counts more and more aggressive and putting around the house for peace of mind ... so what can reports video that you can watch live ... or archived online ... a hundred fifty dollars a book and promises to do one more thing that straight out of an episode of CSI ... the tech human faces ... so the question is can simply can't tell the difference between tax ... and cap strugglers ... this matters because one of the biggest frustrations which most do it yourself home security systems this false alerts ... they're designed to notify you everytime they detect motion when you're not how ... but if you have a pet projects live in a noisy city like I do ... you can end up getting lots of alerts when nothing is wrong ... I get false alerts in an email arrives ... so can tomatoes are soft in the technology company ... that has been years figuring out how to quickly identify faces ... in photos Nvidia ... so the system can detect here soon but can those about human crippling doesn't mean alertness and the mistakes which ... it just ... but with the engineers ran a vast lake and it's ... the ... yes ... it's that only human ... what about half seasons ... simply can't claim severe facial recognition technology can tell the difference between the healing ones ... in the human rights ... let's tie with this little fella images ... there you go to the can can tell this notion that doesn't give an intruder alert ... over a long period test it did have one calf false positive ... one stretch ... his stripes have to make a scene that looked like a human face ... for the most part ... to the camp worked as promised ...